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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 144 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.13 × 50 =
  2. 2.29 × 5 =
  3. 3.66 × 5 =
  4. 4.23 × 50 =
  5. 5.92 × 50 =
  6. 6.35 × 5 =
  7. 7.18 × 5 =
  8. 8.32 × 50 =
  9. 9.35 × 5 =
  10. 10.26 × 5 =
  11. 11.27 × 50 =
  12. 12.66 × 5 =
  13. 13.13 × 5 =
  14. 14.17 × 5 =
  15. 15.36 × 50 =
  16. 16.19 × 50 =
  17. 17.20 × 50 =
  18. 18.89 × 50 =
  19. 19.84 × 50 =
  20. 20.26 × 50 =
  21. 21.43 × 5 =
  22. 22.18 × 50 =
  23. 23.56 × 50 =
  24. 24.78 × 5 =
  25. 25.51 × 5 =
  26. 26.79 × 5 =
  27. 27.22 × 50 =
  28. 28.42 × 50 =
  29. 29.22 × 50 =
  30. 30.97 × 5 =
  31. 31.97 × 5 =
  32. 32.68 × 5 =
  33. 33.59 × 50 =
  34. 34.22 × 50 =
  35. 35.82 × 5 =
  36. 36.78 × 5 =
  37. 37.96 × 5 =
  38. 38.61 × 50 =
  39. 39.98 × 50 =
  40. 40.97 × 50 =

Answer key

  1. 650
  2. 145
  3. 330
  4. 1150
  5. 4600
  6. 175
  7. 90
  8. 1600
  9. 175
  10. 130
  11. 1350
  12. 330
  13. 65
  14. 85
  15. 1800
  16. 950
  17. 1000
  18. 4450
  19. 4200
  20. 1300
  21. 215
  22. 900
  23. 2800
  24. 390
  25. 255
  26. 395
  27. 1100
  28. 2100
  29. 1100
  30. 485
  31. 485
  32. 340
  33. 2950
  34. 1100
  35. 410
  36. 390
  37. 480
  38. 3050
  39. 4900
  40. 4850

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